15 March 1994; revised by national referendum of 24 November 1996 giving the presidency greatly expanded powers and became effective 27 November 1996; revised again 17 October 2004 removing presidential term limits

3 January 1974; suspended since 18 September 1988; a new constitution was approved on 10 May 2008; note - new constitution will take effect when a new parliament is convened following elections scheduled for 2010

made up of unwritten and written acts, customs, judicial decisions, and traditions; the written part of the constitution consists of the Constitution Act of 29 March 1867, which created a federation of four provinces, and the Constitution Act of 17 April 1982, which transferred formal control over the constitution from Britain to Canada, and added a Canadian Charter of Rights and Freedoms as well as procedures for constitutional amendments

16 August 1960
note: from December 1963, the Turkish Cypriots no longer participated in the government; negotiations to create the basis for a new or revised constitution to govern the island and for better relations between Greek and Turkish Cypriots have been held intermittently since the mid-1960s; in 1975, following the 1974 Turkish intervention, Turkish Cypriots created their own constitution and governing bodies within the "Turkish Federated State of Cyprus," which became the "Turkish Republic of Northern Cyprus (TRNC)" when the Turkish Cypriots declared their independence in 1983; a new constitution for the "TRNC" passed by referendum on 5 May 1985, although the "TRNC" remains unrecognized by any country other than Turkey

none
note: based on a series of treaties: the Treaty of Paris, which set up the European Coal and Steel Community (ECSC) in 1951; the Treaties of Rome, which set up the European Economic Community (EEC) and the European Atomic Energy Community (Euratom) in 1957; the Single European Act in 1986; the Treaty on European Union (Maastricht) in 1992; the Treaty of Amsterdam in 1997; and the Treaty of Nice in 2003; note - a new draft Constitutional Treaty, signed on 29 October 2004 in Rome, gave member states two years for ratification either by parliamentary vote or national referendum before it was scheduled to take effect on 1 November 2006; defeat in French and Dutch referenda in May-June 2005 dealt a severe setback to the ratification process; in June 2007, the European Council agreed on a clear and concise mandate for an Intergovernmental Conference to form a political agreement and put it into legal form; this agreement, known as the Reform Treaty, would have served as a constitution and was presented to the European Council in October 2007 for individual country ratification; it was rejected by Irish voters in June 2008, again stalling the ratification process

adopted by referendum 28 September 1958; effective 4 October 1958; amended many times
note: amended concerning election of president in 1962; amended to comply with provisions of 1992 EC Maastricht Treaty, 1997 Amsterdam Treaty, 2003 Treaty of Nice; amended to tighten immigration laws in 1993; amended in 2000 to change the seven-year presidential term to a five-year term; amended in 2005 to make the EU constitutional treaty compatible with the Constitution of France and to ensure that the decision to ratify EU accession treaties would be made by referendum

approved March 1987
note: suspended June 1988 with most articles reinstated March 1989; constitutional government ousted in a military coup in September 1991, although in October 1991 military government claimed to be observing the constitution; returned to constitutional rule in October 1994; constitution, while technically in force between 2004-2006, was not enforced; returned to constitutional rule in May 2006

18 August 1949, effective 20 August 1949; revised 19 April 1972; 18 October 1989; and 1997
note: 18 October 1989 revision ensured legal rights for individuals and constitutional checks on the authority of the prime minister and also established the principle of parliamentary oversight; 1997 amendment streamlined the judicial system

no formal constitution; some of the functions of a constitution are filled by the Declaration of Establishment (1948), the Basic Laws of the parliament (Knesset), and the Israeli citizenship law; note - since May 2003 the Constitution, Law, and Justice Committee of the Knesset has been working on a draft constitution

approved by referendum in November 2006
note: under the old constitution adopted on 5 May 1993, an amendment proposed by President Askar AKAEV and passed in a national referendum on 2 February 2003 significantly expanded the powers of the president at the expense of the legislature; during large-scale demonstrations in November 2006, President BAKIEV and the opposition negotiated a new constitution granting greater powers to the parliament and the government; amendments added on 30 December 2006 redistributed some power back to the president, but both November and December 2006 versions were annulled in September 2007, and a new version was approved by referendum on 21 October 2007; the BAKIEV-initiated referendum was criticized by Western observers for voting irregularities, particularly ballot stuffing

none; note - following the September 1969 military overthrow of the Libyan government, the Revolutionary Command Council replaced the existing constitution with the Constitutional Proclamation in December 1969; in March 1977, Libya adopted the Declaration of the Establishment of the People's Authority

adopted 17 November 1991, effective 20 November 1991; amended November 2001 and in 2005
note: amended November 2001 by a series of new constitutional amendments strengthening minority rights and in 2005 with amendments related to the judiciary

consists of a series of legal documents, including certain acts of the UK and New Zealand parliaments, as well as The Constitution Act 1986, which is the principal formal charter; adopted 1 January 1987, effective 1 January 1987

none; note - on 6 November 1996, Sultan QABOOS issued a royal decree promulgating a basic law considered by the government to be a constitution which, among other things, clarifies the royal succession, provides for a prime minister, bars ministers from holding interests in companies doing business with the government, establishes a bicameral legislature, and guarantees basic civil liberties for Omani citizens

adopted 2 April 1976; subsequently revised
note: the revisions placed the military under strict civilian control, trimmed the powers of the president, and laid the groundwork for a stable, pluralistic liberal democracy; and they allowed for the privatization of nationalized firms and the government-owned communications media

ratified 1 September 1992, effective 1 January 1993; changed in September 1998; amended February 2001
note: the change in September 1998 allowed direct election of the president; the amendment of February 2001 allowed Slovakia to apply for NATO and EU membership

Interim National Constitution ratified 5 July 2005
note: under the Comprehensive Peace Agreement, the Interim National Constitution was ratified 5 July 2005; Constitution of Southern Sudan was signed December 2005

Turks and Caicos Islands Constitution (Interim Amendment) Order 2009, S.I. 2009/701 - effective 14 August 2009 - suspended Ministerial government, the House of Assembly, and the constitutional right to trial by jury, and imposed direct British rule